Wrench



c. E. SCHILLING WRENCH Filed Dec. 26, 1940 Jan. 13, 11-142.

2 Sheets-Sheet 1 Inventor 4a r/es g SA/# 3 By Emma.

Atiorneg,

1942- .c. E. SCHILLING 2,270,011

WRENCH Filed Dec. 26, 1940 2 Sheets-Sheet 2 In ventor (kW/m A. 4 4 5 1 I I a? I 9 A iiorneg,

Patented Jan. 13, 1942 UNITED STATES ATE'l orricr.

2 Claims.

This invention relates to wrenches and an object of the invention is to improve generally upon such types of wrenches as are commonly known as monkey wrenches; and particularly improve upon the means for securing the sliding or adjustable jaw of the wrench in set osition.

The invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure 1 is a side elevational view of a wrench embodying the features of the present invention.

Figure 2 is an edge elevational view thereof.

Figure 3 is an enlarged view taken substantially on the line 3-3 of Figure 2 and showing the parts positioned for freezing the shank of the movable jaw.

Figure 4 is a View similar to Figure 3 but showing the parts in set position.

Figure 5 is a detail sectional view taken substantially on the line 5-5 of Figure 1.

Figure 6 is a detail sectional view taken substantially on the line 6-6 of Figure 1.

Referring more in detail to the drawings it will be seen that the wrench embodies a jaw 5 formed integrally with one end of a shank 6 that in turn is formed integrally with one end of a handle 1.

Complementing the jaw 5 is a jaw 8 provided on one end of an integral shank 9.

The shank 9 works through a sleeve l0 provided therefor.

The sleeve l0 adjacent one end thereof is provided with a pair of ears I l through the medium of which and a rivet Or other pivot element l2 the sleeve I0 is pivoted to the shank 6 adjacent the jaw-equipped end of said shank.

At a relatively opposite end thereof the sleeve I0 is provided with a pair of coextensive guide arms I3 that straddle the shank 6 and at their free ends are connected by a cross web [4 that abuts the shank 6 to limit swinging movement of the sleeve ID on its pivot l2 away from the shank 6.

The shank 9 is provided on one edge thereof with a longitudinal rack with which is cooperable a locking pin It for holding the jaw 8 in the desired position of adjustment relative to the jaw 5.

The pin I6 is disposed between and has its respective opposite ends integral with or otherwise made fast to a pair of opposed carrier plates I! that are accommodated in ways or grooves 18 provided internally of the sleeve l0 and on opposed walls of said sleeve.

At the ends thereof remote from the locking pin IS, the carrier plates are connected by a cross member l9 to which is anchored one end of a coil spring 20. The other end of the spring 20 seats in a recess 2| rovided therefor in a wall of the sleeve [0 confronting the shank 6; it being noted, in this connection, that the sleeve i0 is provided with through openings 22 and 23 to permit free sliding movement of the carrier bars or plates H to permit shifting of the pin l6 into and out of engagement with. the teeth of the rack l5.

From the description of the invention thus far it will be seen that normally the spring 20 urges the carrier bars I! in a direction to engage the locking pin I6 with a tooth of the rack bar l5 for holding the shank 9 against axial movement through the sleeve 10, and consequently the jaw 8 in adjusted position relative to the jaw 5.

When the jaws 5 and 8 are engaged with the work the sleeve 10 is retained in the outward position with respect to the shank 6, as shown in Figure 4, through the medium of a thumb slide 24 against which the pin l9 will abut upon tendency of the sleeve IE! to swing toward the shank 6. The thumb slide 24 thus prevents the pin l9 coming into contact with the shank 6 as would result, as hereinafter explained in the shifting of the pin l6 out of engagement with the rack 15.

Relatve to the statement last above made, it will be apparent that when it is desired to free the shank 9 for efiecting a shifting of the jaw 8, sleeve I0 is swung inwardly toward the shank 6 so that the pin l9 engages an edge of the shank 6 in a manner to act on the pin 19 against the expansive action of the spring 20 for urging the pin l6 toward the right in Figure 5 and out of engagement with the rack I5. In other words, to effect a freeing of the shank 9 the parts are moved substantially to the position shown in Figure 3.

To accommodate the pin is and to permit disengagement of the pin [6 and rack 15 the sleeve H1 is provided internally thereof with a transverse recess or groove 25 as best shown in Figures 3 and 4.

Referring again to the thumb slid 24 it will be seen. that the same is slidably accommodated at the junction of the handle I and shank 6 through the medium of a guide rib 26 formed integral with said handle I and shank 6; the guide rib 26 being accommodated by a goove 21 formed in one edge of the thtunb slide 24 and complementing the rib 26.

Also on one edge or face thereof the slide 24 is provided with a recess 28 to accommodate the tip of the thumb to facilitate sliding the member 24 into and out of the positions shown respectively in Figures 3 and 4.

It is thought that the simplicity of a wrench embodying the features of the present invention, together with the many advantages of such a wrench will be clear to those skilled in the art without further detailed description.

It is also to be understood that while I have herein illustrated and described the preferred embodiment of the invention, I claim all such forms of the invention to which I am entitled and as fall within the scope of the appended claims.

Having thus described the invention what is claimed as new is:

1. In a wrench of the character described, a shank provided with a jaw at one end, a jaw complementing the first-named jaw and having an integrally formed shank, a sleeve pivoted adiacent one end thereof to the shank of the firstnamed jaw and embracing the shank of the second-named jaw; means mounted within said sleeve and engageable with the shank of the second-named jaw for securing the jaws at the desired relative position of adjustment; said means including a spring-biased element having an end projecting outwardly of said sleeve for engagement with the shank of the first-named jaw incidental to a biasing of said sleeve towards the first-mentioned jaw to effect a release of the shank of the second-named jaw; and interengaging means on th shank of the first-named jaw and on said sleeve for arresting movement of the sleeve on its pivot towards the first-named jaw whereby to prevent accidental releasing of the second-named jaw.

2. In a wrench of the character described, a shank equipped at one end with a jaw and at a relatively opposite end with a handle, a jaw complementing the first jaw and provided with a shank, a sleeve pivoted adjacent one end thereof to the first-named shank and embracing the shank of the second-named jaw, the shank of the second-named jaw having rack teeth on one longitudinal edge thereof, oppositely disposed carrier members slidably mounted in said sleeve, a locking pin connecting said members together and coacting with the teeth on said shank for securing the jaws at the desired position of adjustment, said sleeve provided with openings through which said carrier members project, spring means operatively connected to the carrier members and normally urging the latter to a projected position and said locking pin in engagement with th aforementioned teeth; said carrier members being adapted, upon swinging movement of the sleeve towards the firstnamed shank to abut said shank for effecting a shifting of said carrier members in opposition to said spring for releasing the shank of the second-named jaw, and a thumb slide slidably mounted on the shank of the first-named jaw and coacting with said carrier members to limit movement of the sleeve in the direction of the first-named shank, as and for the purpose specified.

CHARLES E. SCHILLING. 

